Milling and boring machine.



G. F. SHANKS.

MILLING AND BORING MACHINE;

APPLICATION PILEDIOV. 15 1911.

1,022,051, Patented Apr.2, 1912.

s SHEETS-SHEET 1.

Wtfzwlw COLUMIIA PMNOGRAPH cm, WASHINGTON. IL 6.

c. F. SHANKS.

MILLING AND BORING MACHINE.

APPLICATION FILED 110v. 15, 1911.

- Patented Apr. 2, 1912.

3 SHEETS SHEBT 2.

COLUHIIA WRAP" :0 WASHINGTON n. c,

MILLING AND BORING MACHINE.

APPLICATION FILED 110V. 15, 1911.

. v 1 2 A 1 r .W xx 2/441. 7 0 j a W #M 5 A M wiziesses 4. 4

' in a horizontal plane.

CHARLES FREDERICK SHANKS, or JOHNSTONE, SCOTLAND.

MILLING AND BORING MACHINE.

Specification of Letters Patent,

Patented Apr. 2, 1912.

Application filed November 15, 1911. Serial No. 660,356.

To all whom it may concern:

Be it known that I, CHARLES FREDERICK SHANKs, a subject of the King of the United Kingdom of Great Britain and Ireland, and residing at J ohnstone, Renfrewshire, Scotland, have invented a certain new and useful Improvement in Milling and Boring Machines, of which the following is a specification.

This invention relates to an improved machine for milling and boring purposes, particularly applicable for milling andboring turbine casings.

The invention has for its object to provide a machine equipped with two milling cutter wheels or sets of cutter wheels preferably disposed in a line or lines substantially or presumably at right angles to the direction of travel and coaxially with each of which wheels or one of each set of wheels is disposed a boring device for a purpose hereinafter referred to.

"In the accompanying drawings Figures 1 and, 2 are elevations at right angles to each other showing a'preferred construction of 'one another, said cutter wheels A being driven by gear wheels from a common shaft.

.As shown, the cutter wheels A are mount-- ed on bracket members A slidably connect: ed to a supporting frame A disposed transversely of, and adjustable vertically in re-, lation to a framework which includes end standards A and is adapted to be 'moved Each cutter wheel is .provided'with a spur wheel B connected to' a sleeve B supported at its upper end by ball bearings (Fig. 3) in the bracket member A and said spur wheel is engaged by a pinion C adapted to be ro-tate'd'by clutch-controlled bevel gearing D from'a shaft 'E which is supported on the frame A and is driven from an electric motor F, supported by across beam F connecting said standards A ,'th1'ough spur gearing G, bevel gearing H and spur gearing I mounted on' one of the standards A and through bevel gearing J and spur gearing -K mount- -ed ontheframe A the bevel wheel J on the driving shaft J being slidable relatively to said shaft J so' as to permit of vertical adjustment of the frame A Ooaxially with each cutter wheel A is a spindle L carrying a drill M movable axially so as to project beyond the face of the cor responding cutter wheel, each drill spindle I. being adapted to be driven through gearing at a higher speed than the corresponding cutter wheel A and being fitted relatively to the cutter wheel in such manner as (01% permit of proper feed of the drill spin- As shown particularly in Figs. 3 and 4:, the drill spindle L passes co-axially through the sleeve B and is adapted to be-rotated by means of spur'gearing N and a bevel wheel N engaged by bevel wheels 0 and P freely mounted on the shaft E and having clutch faces adapted to be engaged one at a time by a sliding clutch Q, rotatable with said shaft E, according to the direction in which it is desired to rotate the drill spindle L. The feed mechanism for the spindle L may comprise, for example, a rack R (Figs.

1, 2 and 4) freely mounted on said spindle, and a pinion S which is operated by worm gearing T and by preferably manually-controlled bevel gearing'U supported on the 'nection at X with the worm wheel W, so

that when the wheel W is rotated, the sleeve X is also rotated and moved axially relatively to the bush Y, thereby moving axially the sleeve B The bracket members A are-adapted to be adjusted horizontally by means of screwthreaded spindles a'rotatably mounted on the frame A and the. said frame A is adapted to be adjusted vertically by means of screw-threaded spindles b rotatably mounted on the standards A and operated by worm gearing 0 from a shaft 0 supported on the cross beam F and standards A and provided with a spur wheel 03 adapted to be engaged by a sliding pinion F v driven from the electric motor F. The standards A and parts connected thereto are adapted to be moved relatively to stationary supporting ways A on the base of the machine by means of screw-threaded spindles a mounted on the said supporting ways A*, which spindles e are rotated by means of bevel gearing f operated by a shaft 9 which is driven by spur gearing h, bevel gearing z' and spur gearing y' from an electric motor k.

In the operation of the improved machine the supporting frame-work, comprising the end standards A and the supporting framepiece or cross-bar A mounted on said standards, will be caused to travel on the supporting ways A; while the said supporting frame piece or cross bar A on which the milling and boring devices are mounted, may be raised and lowered, in accordance with the requirements of the work, by the rotatablescrews I). Also the bracket members A directly supporting the milling and boring devices, may be adjusted to any desired positions in accordance with the requirements of the work on the said supporting frame-piece or crossbar A. Also the drill spindles L, which are mounted concentrically or co-aXially with the cutter wheels or milling devices A, are adapted to be fed vertically relative to said cutter wheels or milling devices, and are driven by a gearing mechanism which is adapted to impart very much higher rates of rotative speed thereto than is imparted to the said cutter wheels or milling devices. The driving connections of the rotating milling and boring devices with the driven shaft E are independent of each other so that when the millingdevices are in operation the boring devices may be at rest, and vice versa, owing to the independent clutch connections of the gearing D, which drives the milling cutter, and the reversible gearing N, N 0 and P, whichdrives the boring devices, with said shaft E. Also the milling and boring devices are fed vertically independently of each other by the manually operated means including the hand-wheels V which are geared to the milling tools, and the handwheels whicho-perate the gearing U connected to the drill spindles.

"Owing to the manner in which the oper-. ating tools of this improved machine are mounted, and the meansby which they may be causedto travel and maybe adjusted, the machine is particularly adapted for milling and boring turbine casings, or other similar work, as hereinbefore indicated.

It will be understood that with a machine equippedxwith milling cutters and boring drills asabOVe described it'is possible to mill casings Eforzturbines 'or the like during the framework travel of the tool in one direction and on the return motion to bore the milled surfaces.

Having now described my invention what I claim and desire to secure by Letters Patent ofthe United States is 1. In a milling and boring machine, the combination with supporting ways, A of a traveling frame-work comprising end standards and a frame-piece or cross-bar, A connecting said standards, bracket members adjustably mounted on said frame-piece or cross-bar, milling devices rotatably supported by said bracket members, rotating boring devices also supported by said bracket members and arranged co-axially with said milling devices, means for causing said frame-work to travel on said supporting ways, means for adjusting said framepiece or cross-bar A vertically on the said end standards, and driving means for rotating said milling and boring devices.

2; A milling and boring machine comprising in combination a framework adapted to be moved in a horizontal. plane, said including end standards, a frame extending transversely of said standards and adjustable vertically relatively thereto, bracket members adjustably connected to said frame, milling devices rotatable on vertical axes and mounted on said bracket members, and boring devices mounted on said bracket members arranged co-aXially with said milling devices.

3. A milling and boring machine comprising in combination, a framework adapted to be moved in a horizontal plane, said framework including end standards, a frame extending transversely of said standards and adjustable vertically relatively thereto, bracket members adjustably connected to said frame, milling cutter wheels rotatable on vertical axes and mounted on said bracket members and adjustable axially relatively to said bracket members, and boring devices mounted on said bracket members arranged co-axially with said milling devices.

4. In a milling and boring machine, the combination with supporting ways, A, of a traveling frame-work comprising end standing devices also supported by said bracket members and arranged co-axially with said milling devices, means for causing sald frame-work to travel on said supporting ways, means for adjusting said frame-piece or cross-bar A vertically on the said end standards, means for adjusting said bracket members horizontally on said frame piece or crossbar, independent feeding mechanisms for the milling and boring devices, and driving means for rotating said milling and boring devices.

5. In a milling and boring machine, the combination with supporting ways, A, of a traveling frame-work comprising end standards and a frame-piece or cross-bar, A connecting said standards, bracket members adjustably mounted on said framepiece or cross-bar, milling devices rotatably supported by said bracket members, rotating boring devices. also supported by said bracket members and arranged co-axially with said milling devices, means for causing said frame-work to travel on said supporting ways, means for adjusting said frame-piece or cross-bar A vertically on the saidend standards, and driving means for rotating said milling and boring devices, said driving means comprising a driven shaft, E, with which said milling and boring devices have independent connections so that the boring devices may be at rest when the milling devices are in operation, and vice versa, and the operating mechanism of the boring devices comprising reversing gearing.

6. In a milling and boring machine, the combination with supporting ways, A of a traveling frame-work comprising end standards and a frame-piece or cross-bar, A connecting said standards, bracket members adjustably mounted on said frame-piece or cross-bar, milling devices rotatably supported by said bracket members, rotating boring devices also supported by said bracket members and arranged co-axially with said milling devices, means for causing said frame-work to travel on said supporting ways, means for adjusting said framepiece or cross-bar A vertically on the said end standards, means for adjusting said bracket members horizontally on said frame-piece or cross-bar, independent feeding mechanisms for themilling and boring devices, and driving means for rotating said milling and boring devices, said driving means comprising a driven shaft, E, with which said milling and boring devices have independent connections so that the boring devices may be at rest when the milling devices are in operation, and vice versa, and the operating mechanism of the boring dev1ces comprising reversing gearing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES FREDERICK SHANKS.

Witnesses:

WALLACE CRANSTON FAIRWEATHER, JOHN TRAILL STEVENSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

